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Distribution of Cl observed by Mars Odyssey GRS

Wednesday, November 22, 2006

John

Keller (Lunar and Planetary Lab, University of Arizona)

The global distribution of Cl on Mars is heterogeneous, varying from 0.2 to 0.8 wt%. A region of high Cl is centered over Medusae Fossae to the west of Tharsis. Cl correlates positively with H and negatively with Si and thermal inertia. Possible mechanisms influencing the distribution of Cl include aeolian, volcanic, aqueous, and hydrothermal processes.